In his previous position as Vietnam’s Prime Minister, Phuc paid several visits to Cambodia.

Reaching 84% of the demarcation work costs great efforts of both sides as the 1,270-km border spans 10 provinces through mountains, jungles, and rivers.

The two neighboring countries that share land and sea borders have stuck together and helped each other for a long time in history

Experts believed that the Vietnam-Cambodia relations are vital for both.

Hun Sen said that there were no countries to turn to except Vietnam for help in reorganizing the fight against Pol Pot's regime and saving millions of people.